This paper intends to derive a detailed representation and attain a suitable computation method for the traction network. The transient analysis of the lossy multiconductor transmission lines (MTLs) is performed considering the electromagnetic characteristics of the rail track, which accounts for the frequency-dependent and distributed nature of the line parameters over the entire frequency range for the traction network. Due to the practical difficulty in wideband parameter determination and the complex layout for the traction power supply system, the model implemented has been validated by comparison to several field tests that are carried out on a real high speed railway line for the purpose of identifying possible power quality problem. The good high representation of the frequency-dependent parameter and the numerical solution will provide a reliable method for the transient analysis of the electrified railway. Afterwards, the transient calculation using vector fitting and modal decomposition is presented to evaluate how the emission is propagating along the MTLs of the electrified railways. Performing detailed and suitable analysis is necessary to determine the overvoltage conditions during the transients. The outcome of the analysis could be beneficial for the transient protection study in the electrified railway system. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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牵引网的详细表示和计算及其在电气化铁路暂态分析中的应用

本文旨在推导出详细的表示并获得一种适用于牵引网络的计算方法。有损多导体传输线 (MTL) 的瞬态分析是考虑到轨道的电磁特性进行的，这说明了牵引网络整个频率范围内线路参数的频率相关和分布特性。由于宽带参数确定的实际困难和牵引供电系统的复杂布局，所实现的模型已经通过在真实高速铁路线上进行的多次现场测试进行比较验证，以确定可能的功率质量问题。频率相关参数良好的高表征和数值解将为电气化铁路的瞬态分析提供可靠的方法。然后，介绍了使用矢量拟合和模态分解的瞬态计算，以评估排放如何沿电气化铁路的 MTL 传播。需要进行详细和适当的分析，以确定瞬变期间的过压条件。分析结果可能有益于电气化铁路系统中的瞬态保护研究。© 2021 日本电气工程师学会。由 Wiley Periodicals LLC 出版。介绍了使用矢量拟合和模态分解的瞬态计算，以评估排放如何沿电气化铁路的 MTL 传播。需要进行详细和适当的分析，以确定瞬变期间的过压条件。分析结果可能有益于电气化铁路系统中的瞬态保护研究。© 2021 日本电气工程师学会。由 Wiley Periodicals LLC 出版。介绍了使用矢量拟合和模态分解的瞬态计算，以评估排放如何沿电气化铁路的 MTL 传播。需要进行详细和适当的分析，以确定瞬变期间的过压条件。分析结果可能有益于电气化铁路系统中的瞬态保护研究。© 2021 日本电气工程师学会。由 Wiley Periodicals LLC 出版。© 2021 日本电气工程师学会。由 Wiley Periodicals LLC 出版。© 2021 日本电气工程师学会。由 Wiley Periodicals LLC 出版。